Winding machine



Jan. 26, 1943,

E. J. ABBOTT WINDING MACHINE Filed Aug. 1, 1940 3 Sheets-Sheet 1 Jan. 26, 1943. J. ABBQTT- 2,309,085

WINDING MACHINE Filed Aug. 1, 1940 3 Sheets-Sheet 2 an! V I fli W 111 ,[gf

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Jan. 26, 1943. E, J, ABBOTT WINDING momma Filed Aug. 1, 1940 3 Sheets-Sheet 3 L W W ILJIIII lrza'eniar "ma Jan. as, 1943:

I 1.3.9.085 f wmnmciiuicnma I Edward J. Abbott, Wilton, N. 11., assignor'to'Abbott Machine Company, Wilto notation of New Hampshire n, N. Baa cor- Application August 1,1940, sci-n1 No. 349,105 1: Claims. (01. 24245.6)

invention relates to automatic winding machines and more particularly to the type of machine in which an end of yarn is automatically found on the surface of a wound package and conveyed to a thread-uniting means'to be Joined to another end of yarn such as that of a new supply bobbin or that of the old formerly unwinding bobbin of the winding unit.

Among the objects of the invention are to provide for timing the delivery of the found thread to the thread-uniting means in relation to the action of the end-finding means; to enable the thread-uniting means to operate quickly after the end-finding means but to insure that the endfinding means will have finished with the package before the found thread is delivered to the threaduniting means; and to prevent a thread which has been delivered to the thread-uniting means from .being acted upon further by the end-finding means.

Although the principles of this invention are of general applicability to winding machines of this type, the preferred illustrated embodiment apadvantage and utility will be apparent from this specification'and its drawings wherein the invention is explained by way of example.

In the drawings:

Fig. l is a vertical sectional view through the track and magazine of a traveling spindle automatic winder, showing also the end-finding and thread-uniting mechanism of the machine, and

one traveling winding unit progressing away from the point of view of the observer;

Fig; 2 is a right side elevationof the endfinding- Referring to the drawings, the machine like that of United States Patent No. 2,177,763 is equipped with a track or guide 20 along which the several traveling winding units 22 are pulled by a' suitable chain, an end-finding roll indicated generally by the reference character II I adapted said Patent No. 2,177,763 on each unit thewinding package spindle may be carried by an arm mechanism of Fig. 1, with the winding unit re-- moved to show certain parts in rear thereof, and with the thread conveying tube broken away;

Fig. 3 is a vertical sectional view on the lin I 3-3 of Fig. 2;

Fig.4 is a plan view of the end-finding mechanism and its suction nozzle;

Fig. 5 is a vertical sectional view on theline 5-5 of Fig. 4;

vertical sectional view on the line l'l of Fig. 2-. v

to rotate a wound package P in the unwinding direction, a suction nozzle I I2 (Fig. 4), a suction tube I08 leading from the nozzle to the center of the magazine H and slotted at l I 3 (Figs. 2 and 4) to permit the end of yarn P that is carried to the magazine from the package P to leave the tube Inland be drawn into a knotter indicated generally at I22. Y i

The magazine H is constructed generally similarly to the magazine of said Patent No. 2,177,763 and is equipped with the necessary devices to effeet a knotting of the end of yarn P with another end of yarn, and with means including for example a chute l0lfor delivering new supply bobbins to the supply bobbin-holders of the several winding units.

For lifting the winding package off the package driving rolls with which machines of this type are provided, and for use in lowering the package onto the end-finding roll l l I, suitable lifting and lowering mechanism is provided. As shown in 36, pivoted at 31 and lifted and lowered by means including a rod 53. The lower end of'the rod 53 is connected toa crank 52 on the left end of a the pawl 49 of the moving winding unit'is detained by contact with a non-traveling element'in its path, the'pawl 49 turns the shaft 5| to lift the package from the roll I l- I.

After the package P is placed on the roll H I,

the time elapsing before the found end of the yarn will be drawn into the tube lll8-is'variable,

depending of course upon the diameter'of the package and upon how many revolutions it makes before the end of yarn is found. It might at some times occur that an end of yarn would be drawn into the tube I08 and carried to the knotter so quickly that the package would bestill in contact with the roll II I, in which case'thc suction nozzle might draw in a loop ofyam and attempt to deliver that loop to the knotter, thereby producing a snarl. The invention therefore provides for delaying the delivery of the found y..rn end to the knotter until after the unwinding roll has finished with the package. A finger 200 comprising a bent extensionof a shaft 20l has its shaft 20I rotatably mounted in a sleeve 202 on the side of the tube I08 in a position for the finger 200 normally to block the exit of the yarn from the slot H3 at this place. At the magazine, the slot H3 is further blocked by a lip 205, so that being constrained to stay in the slot H3 at the lip 205 and finger 200, and being pulled along through the tube I08 under strong suction, the yarn is held in the tube I08 between the finger 200 and the lip 205 andhenceheldabove the level of the package P. The tendency of the yarn indicated at P to leave the portion of the tube I08 below the finger 200 (that is between the roll I I I and the finger) is therefore prevented from being transmitted to the yarn in the remainder of the tube I08. The yarn therefore continues to run freely through the tube I08 down the central part of the magazine as it is unwound from the package P, and is held out of the clamp 201 of the knotter.

As more and more yarn is drawn down into the central portion of tube I08 in the magazine, the portion between the finger 200 and the unwinding roll pulls out of the slot in tube I08, whipping over to the double-dot and dash line position P of Fig. 1, direct from the package to the finger 200.

At approximately the time the package is lifted from the roll III, the finger 200 is withdrawn from its position across the slot II3 by rotating the shaft 20I. This motion is preferably accomplished by the use of the means for lifting the package from the roll, more particularly, by use of an element which is struck by and operates upon the pawl 49. As shown in Figs. 1 and 2, a crank arm 2I0 of a double crank is interposed in the path of the pawl 49, and the other arm 2 is connected by a lifter rod 2| 2 to a crank arm 2I3 fastened to the shaft 20I, Thus when the pawl 49 strikes the crank arm 2I0, this arm 2I0 and the other arm 2 are turned slightly, lifting rod 2I2 and swinging the finger 200 so that it no longer lies across slot II 3. Further movement of the winding unit then causes the pawl 49 to be detained by the crank arm 2I0 (which has reached the limit of its. movement) and the pawl 49 and shaft thereby are caused to turn to lift the package off the roll III.

With the finger 200 out of the way, the yarn in tube I08 is then able to leave the slot H3 and whip across directly from the bottom of the package into the clamp of the knotter.

As indicated above, the yarn tends to be withdrawn from that portion of the slot I I3 below the finger 200 before the finger is shifted. It is desirable to delay such withdrawal of the yarn until the package has progressed along the roll III to at least the slot I I3 in the suction nozzle, thus preventing the thread from drawing across the path in front of the leading end of the package. For this purpose, the under side of the top wall of the suction nozzle cover is provided with a shallow notch 220 (Figs. 4 and 6) in- 70 to act on the found thread end, a slotted suction creasing in depth in the direction of the slot! H3 and positioned to intercept and detain a yarn against initially leaving the slot at a point removed from the mouth I I2 of the nozzle. When the package has progressed far enough for the found yarn in the nozzle I It to leave the slot 5 the finger 200 is encountered. The shallow notch 220 thu insures that the yarn will begin to leave the slot H3 at the end or mouth of the slot, and not at some intermediate point, and that it will remain in the slot long enough at least to 10 allow the leading end of the package to reach the end or mouth of the slot.

A plain end-finding roll III may be employed, but it is preferred to use the construction described in the copending application of Edward F J. Abbott, Serial No. 302,994, filed November 6, 1939, wherein between two roll sections III e and III (which are driven in the unwinding direction by a shaft III), there is arranged a. brush element I6 having thereon fiaps I8 (driven in a direction opposite to that of the roll sections III and III by gears 38, 31 and shaft 3|). A constantly rotating cross shaft 26 (Fig. 3) is adapted to drive shaft III through gears 21 and 28, and to drive shaft 3| through gears 29 and 30 as explained in more detail in said application Serial 302,994. With such a construction, the flaps I8 brush over the surface of the reverselyrotating package and insure that the end of yarn will be carried into the nozzle I I2.

30 I claim:

1. An automatic .winding machine having therein means for finding a thread end of a winding package and thread-uniting means adapted to act on the found thread end, and

means for detaining the found thread from engagement with the thread-uniting means until after a predetermined cycle of operation of the end-finding means, to prevent premature delivery to the thread-uniting means of a thread -10 that is quickly found by the end-finding means.

2. An automatic winding machine having therein means for finding a thread end of a winding package, thread-uniting means adapted to act on the found thread end, a suction conduit for conveying the found thread end to the threaduniting means, the conduit having an opening to permit the thread to leave the conduit for reception by the thread-uniting means, and means for temporarily detaining the thread from leaving the conduit through said exit, thereby to time the reception of the thread by the uniting means in relation to the operation 'of the endfinding means.

3. An automatic winding machine having 5 therein means for finding a thread end of a winding package, thread-uniting means adapted to act on the found thread end, a slotted suction conduit extending in an indirect path from the end-finding means to adjacent to the threaduniting means, whereby the thread is adapted to leave the conduit through said slot for reception by the thread-uniting means, a member adapted to extend across the slot, and means for automatically removing said member from its position 5 across the slot in timed relation to the action of the end-finding means upon the package.

4. An automatic winding machine having therein means for finding a thread end of a winding package, thread-uniting means adapted ception by the thread-uniting means. a member eral units to render said detaining means inadapted to extend across the slot at a point where said member can cause the thread to remain in a sufficient length of the conduit to keep out of the thread-uniting means and means for automatically removing said member from its position across the slot in timed relation to the action of the end-finding means upon the package.

5. An automatic winding machine having therein thread end-finding means including means for rotating a thread package in an unwinding direction, means for operatively associating the package with said package-rotating means, a suction conduit adapted to receive an end of thread from the package while the latter is thus rotated, a thread-uniting means to which the conduit is adapted to deliver the found thread, and means for temporarily preventing such delivery of the thread to the uniting means during the time the package-rotating means is acting on the package.

6. An automatic winding machine having therein thread end-finding means including a roll adapted to rotate a thread package in an unwinding direction, a suction conduit adapted to receive an end of thread from the package while the latter is thus rotated, a thread-uniting means to which the conduit is adapted to deliver the found thread, means for placing thepackage in contact with said roll and means for removing the package from the roll, and means, operating in timed relation to the package-removing means, for temporarily delaying delivery of the found thread to the uniting means.

7. An automatic winding machine having therein thread end-finding means including. a roll adapted to rotate a thread package in an unwinding direction, a suction conduit adapted to receive an end of thread from the package while the latter is thus rotated, a thread-uniting means to which the conduit is adapted to deliver the found thread, means for placing the package in contact with said roll, means for shifting the package away from the roll, and means adapted to detain the thread in the conduit and actuable by said shifting means to release the thread.

8. An automatic winding machine having therein thread end-finding means including -a roll adapted to rotate a thread package in an unwinding direction, a suction conduit adapted to receive an end of thread from the package while the latter is thus rotated, a thread-uniting means to which the conduit is adapted to deliver the found thread, means for placing the'package in contact with said roll and means for removing the package from the roll, said package-removing means acting later in the case of a package of large diameter than in the case of a package of small diameter, and means, operating in timed relation to the package-removing .means, for temporarily delaying delivery of the found thread to the uniting means.

9. An automatic winding machine of the type in which a plurality of winding units are conveyed pastend-flnding and thread-uniting mechanisms, the machine including a roll adapted to rotate the thread packages of the successive units in an unwinding direction, a suction conduit adapted to receive an end of thread from a package rotated by the roll and to deliver the thread to the thread-uniting means, means for detaining the thread against delivery by the conduit, each unit including package shifting mechanism adapted to remove the package fromthe roll, and the machine including means actuated by the package-shifting mechanisms of the seveffective.

10. An automatic winding machine of the type in which a plurality of winding units are conveyed past end-finding mechanism, the machine including means adapted to rotate a thread package in an unwinding direction, a suction nozzle having mouth adapted to receive an end of thread from the package, a suction conduit leading from the nozzle to convey the found end of thread, the conduit and nozzle having a. slot extending in the general direction of conveyance of the thread, said slot extending to and opening into the mouth of the nozzle, the package being moved past the nozzle, and the nozzle having a recess shaped to detain a thread against leaving the nozzle through its slot at a point removed from the nozzle mouth until the movement of the package brings the thread to the slot at the nozzle mouth.

11. An automatic winding machine of the type in which a plurality of winding units are conveyed past end-finding mechanism, the machine including means adapted to rotate a thread package in an unwinding direction, a suction nozzle having a mouth adapted to receive an end of thread from the package, a suction conduit leading from the nozzle to convey the found end of thread, the conduit and nozzle having a slot extending in the general direction of conveyance of the thread, said slot extending to said opening into the mouth of the nozzle, the package being moved past the nozzle, and the nozzle having means adapted to detain a thread against leaving the nozzle through its slot at a'point removed from the nozzle mouth until the movement of the package brings the thread to the slot at the nozzle mouth.

12. An automatic winding machine of the type in which a plurality of winding units are conveyed past end-finding mechanism, the machine including means adapted to rotate a thread package in an unwinding direction, a suction nozzle having a mouth adapted to receive an end of thread from the package, a suction conduit leading from the nozzle to convey the found end of thread, the conduit and nozzle having a slot extending in the general direction of conveyance of the thread, said slot extending to and open- 13. An automatic winding machine of the type i in which a plurality of winding units are conveyed past end-finding mechanism, the machine including means adapted to rotate a thread package in an unwinding direction, a suction nozzle having a mouth adapted to receive an end of thread from the package, a suction conduit leading from the nozzle to convey the found end of thread, the conduit and nozzle having a slot ex-.

tending in the general direction of conveyance of the thread, said slot extending to said opening into the mouth ofthe nozzle, the package being moved past the nozzle, and the nozzle having means adapted to detain a thread against leaving the nozzle through its slot at a point removed from the nozzle mouth until the leading end of the package-has'at least reached the slot at the nozzle mouth. EDWARD J. ABBOTT. 

